(I work in retail and get this often enough that I am tired of hearing it. One afternoon a coworker and I are folding clothes on a table that guests have messed up while shopping.)

Guest: “Miss, do you work here?”

Me:*looks down at my obvious work uniform* “No, sir, my friend and I here just like folding clothes at various retail stores for kicks.”

Guest: “Oh, okay.” *walks off*

(Between my laughter and my coworker’s, I went to the man and apologized, explaining I did work here, and helped him. He laughed, too, so all was good, but he was the first guest that had taken me seriously.)